To william h



orsi-cn.

Jonny. oeonNQR, 0F CHICA-cro,i Hamers, AssIeNon 'ro Vwiiinraivr H. Minnie, or cri-Azar,

' y I YNEW-f'Yoan..

To all lwhom t may concern.'

Be it known that I, JOHN F. OCoNNon, a citizen of the United States, residingat Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Side Bearings for Railway-Cars, of which the following is a full, clear, con-oise, and exact description, reference being had to the accompanying drawings, forming a part of this specifica-- tion.

My invention relates to improvements in side bearings for railway cars.

The object of my invention is to provide a simple and efficient side bearing.

In the drawings forming a part of this speci-cation, Figure 1 is a vertical, longit'udinal section of a side bearing embodying my invention. Fig. 2 is a cross section taken on line 22 ofFig. 1. Fig. 3 is a vertical, longitudinal section illustrating a modification.

Referring to the drawings, the numeral 4 indicates the body bolster of a railway car; 5 a truck bolster; 6 a base member or retaining casting, which is provided with flanges 7, suitably perforated as at 8 for the passage of the rivets 9, which secure the retaining casting to the bolster 5. The retaining casting is open at its upper side 10 and carries within it the rocker 11, which is provided with a series, as for instance three, as shown in Fig. 1 of the drawings, of cylindrical, bearing surfaces 12-12 regularly arranged with respect to the center of the rocker. The retaining casting is provided with correspondingly curved surfaces 18 13 and intermediate projections' A111-14 forming a wall conforming to the periphery of the rocker. In normal position of the rocker, as illustrated in Fig. 1, one of the cylindrical, bearing faces, indicated at 14, is opposed to the body bolster and is adapted to be engaged thereby. On movement, the rocker travels toward the end of the base member and on extreme travel to one end, as for instance its left end, will assume the position shown by the dotted line 15 in Fig. l. In this position, or in any position, a portion of the periphery of the rocker will engage the inner wall of the retaining casting, and, on account of the conformation of the said wall and of the rocker, the bean ing will, at all times, be of substantially Specification of Letterslatent. Patented Jung 3, 1919, A'ppne'afion'ied ingest asiais. Y serial No. 251,074.

the Vsame height, and will, on movement away from its normal position, return to its normal position positively after each actuation in either direction from the normal. In the modification shown in Fig. 3, the numeral 20 indicates a bolster with a base member or retaining casting 21 secured thereto, the base casting having within it a rocker 22 provided with a series of cylindrical bearing faces 23, the said bearing faces being live in number, as illustrated in Fig. 3, and the interior wall of the base member being conformed to substantially iit the periphery of the rocker in any actuation from its normal position. Its normal position is shown as midway between the ends of the retaining member and its position upon eX- treme actuation to the left is shown by the dotted line 24 in Fig. 3. The conformation of the inner wall of the base member and of the rocker serves to positively position the rocker, in the same manner as does the structure illustrated in Figs. 1 and 2.

As will be evident from the preceding description and examination ofthe drawing, my improved anti-friction element is formed by bringing together a plurality of cylindrical sections and merging them in such manner that the axes of the various cylindrical sections coincide with the angles of a regular polyhedron whose own aXis or center corresponds to the actual center of my improved anti-friction element. For instance, in Fig. 1, the centers of the Ythree cylindrical sections 12--12 coincide with the three angles of an equilateral triangle whose center is the center ofthe anti-friction element and in Fig. 3, the centers of the cylindrical surfaces 23 coincide with the angles of a regular pentagon whose center corresponds to the center of the anti-friction element. lVith vthis construction, it is evident that the anti-friction element may be turned bodily so as to present different bearing surfaces to thereby minimize wear and prolong the life of the device.

I claim:

-l. In an anti-friction bearing, the combination with a housing, 0f a rocker associated therewith, said rocker comprising a series of merged cylindrical sections having their axes spaced equal distances apart and uniformly located with respect to the axis of the rocker itself, said recher being adapted.

to move bodily With respect to the housing coinciding with the angles'of a regular polyand the latter having its interior surfaces hedron Whose own axis coincides With the l0 conformed to the peripheral surfaces "of the axis 0f the rocker. rocker. In Witness that I claim the foregoing l 2. As an article of manufacture, a rocker have hereunto subscribed my name this 19th for anti-friction bearings, said rocker comday of Aug. 1918. prising a series of merged cylindrical sections, the axes of said cylindrical sections JOHN F. OCONNOR.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

